public class SumUtils {
    public int numInt1, numInt2;
    public double numDouble1, numDouble2;
    public String str1, str2;


    public void sumUtils(int numInt1, int numInt2) {
        this.numInt1 = numInt1;
        this.numInt2 = numInt2;
        System.out.println("整数相加：" + (numInt1 + numInt2));
    }


    public void sumUtils(double numDouble1, double numDouble2) {
        this.numDouble1 = numDouble1;
        this.numDouble2 = numDouble2;
        System.out.println("小数相加：" + (numDouble1 + numDouble2));
    }


    public void sumUtils(String str1, String str2) {
        this.str1 = str1;
        this.str2 = str2;
        System.out.println("两个字符串相加：" + (str1 + str2));
    }


    public void sumUtils(int numInt1) {
        int result = 0;
        for (int i = 1; i < numInt1 + 1; i++) {
            result += i;
        }
        System.out.println("1到指定整数的和：" + result);
    }
}
